diff options
Diffstat (limited to 'lzo/src/lzo_init.c')
| -rw-r--r-- | lzo/src/lzo_init.c | 95 |
1 files changed, 78 insertions, 17 deletions
diff --git a/lzo/src/lzo_init.c b/lzo/src/lzo_init.c index 6977891d..2872949c 100644 --- a/lzo/src/lzo_init.c +++ b/lzo/src/lzo_init.c @@ -2,6 +2,9 @@ This file is part of the LZO real-time data compression library. + Copyright (C) 2011 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2010 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2009 Markus Franz Xaver Johannes Oberhumer Copyright (C) 2008 Markus Franz Xaver Johannes Oberhumer Copyright (C) 2007 Markus Franz Xaver Johannes Oberhumer Copyright (C) 2006 Markus Franz Xaver Johannes Oberhumer @@ -67,6 +70,11 @@ ACCCHK_ASSERT_IS_UNSIGNED_T(lzo_uint32) ACCCHK_ASSERT((LZO_UINT32_C(1) << (int)(8*sizeof(LZO_UINT32_C(1))-1)) > 0) ACCCHK_ASSERT(sizeof(lzo_uint32) >= 4) +#if defined(LZO_UINT64_MAX) + ACCCHK_ASSERT(sizeof(lzo_uint64) == 8) + ACCCHK_ASSERT_IS_SIGNED_T(lzo_int64) + ACCCHK_ASSERT_IS_UNSIGNED_T(lzo_uint64) +#endif #if !defined(__LZO_UINTPTR_T_IS_POINTER) ACCCHK_ASSERT_IS_UNSIGNED_T(lzo_uintptr_t) @@ -86,35 +94,92 @@ // ************************************************************************/ +#define WANT_lzo_bitops_clz32 1 +#define WANT_lzo_bitops_clz64 1 +#define WANT_lzo_bitops_ctz32 1 +#define WANT_lzo_bitops_ctz64 1 +#include "lzo_func.ch" + +#if 0 +#define u2p(ptr,off) ((lzo_voidp) (((lzo_bytep)(lzo_voidp)(ptr)) + (off))) +#else +static __lzo_noinline lzo_voidp u2p(lzo_voidp ptr, lzo_uint off) +{ + return (lzo_voidp) ((lzo_bytep) ptr + off); +} +#endif + LZO_PUBLIC(int) _lzo_config_check(void) { lzo_bool r = 1; - union { unsigned char c[2*sizeof(lzo_xint)]; lzo_xint l[2]; } u; - lzo_uintptr_t p; + union { + lzo_xint a[2]; unsigned char b[2*LZO_MAX(8,sizeof(lzo_xint))]; +#if defined(LZO_UNALIGNED_OK_8) + lzo_uint64 c[2]; +#endif + unsigned short x[2]; lzo_uint32 y[2]; lzo_uint z[2]; + } u; + lzo_voidp p; + u.a[0] = u.a[1] = 0; + p = u2p(&u, 0); + r &= ((* (lzo_bytep) p) == 0); #if !defined(LZO_CFG_NO_CONFIG_CHECK) #if defined(LZO_ABI_BIG_ENDIAN) - u.l[0] = u.l[1] = 0; u.c[sizeof(lzo_xint) - 1] = 128; - r &= (u.l[0] == 128); + u.a[0] = u.a[1] = 0; u.b[sizeof(lzo_uint) - 1] = 128; + p = u2p(&u, 0); + r &= ((* (lzo_uintp) p) == 128); #endif #if defined(LZO_ABI_LITTLE_ENDIAN) - u.l[0] = u.l[1] = 0; u.c[0] = 128; - r &= (u.l[0] == 128); + u.a[0] = u.a[1] = 0; u.b[0] = 128; + p = u2p(&u, 0); + r &= ((* (lzo_uintp) p) == 128); #endif #if defined(LZO_UNALIGNED_OK_2) - p = (lzo_uintptr_t) (const lzo_voidp) &u.c[0]; - u.l[0] = u.l[1] = 0; - r &= ((* (const lzo_ushortp) (p+1)) == 0); + u.a[0] = u.a[1] = 0; + u.b[0] = 1; u.b[sizeof(unsigned short) + 1] = 2; + p = u2p(&u, 1); + r &= ((* (lzo_ushortp) p) == 0); #endif #if defined(LZO_UNALIGNED_OK_4) - p = (lzo_uintptr_t) (const lzo_voidp) &u.c[0]; - u.l[0] = u.l[1] = 0; - r &= ((* (const lzo_uint32p) (p+1)) == 0); + u.a[0] = u.a[1] = 0; + u.b[0] = 3; u.b[sizeof(lzo_uint32) + 1] = 4; + p = u2p(&u, 1); + r &= ((* (lzo_uint32p) p) == 0); +#endif +#if defined(LZO_UNALIGNED_OK_8) + u.c[0] = u.c[1] = 0; + u.b[0] = 5; u.b[sizeof(lzo_uint64) + 1] = 6; + p = u2p(&u, 1); + r &= ((* (lzo_uint64p) p) == 0); +#endif +#if defined(lzo_bitops_clz32) + { unsigned i; lzo_uint32 v = 1; + for (i = 0; i < 32; i++, v <<= 1) + r &= lzo_bitops_clz32(v) == 31 - i; + } +#endif +#if defined(lzo_bitops_clz64) + { unsigned i; lzo_uint64 v = 1; + for (i = 0; i < 64; i++, v <<= 1) + r &= lzo_bitops_clz64(v) == 63 - i; + } +#endif +#if defined(lzo_bitops_ctz32) + { unsigned i; lzo_uint32 v = 1; + for (i = 0; i < 32; i++, v <<= 1) + r &= lzo_bitops_ctz32(v) == i; + } +#endif +#if defined(lzo_bitops_ctz64) + { unsigned i; lzo_uint64 v = 1; + for (i = 0; i < 64; i++, v <<= 1) + r &= lzo_bitops_ctz64(v) == i; + } #endif #endif - LZO_UNUSED(u); LZO_UNUSED(p); return r == 1 ? LZO_E_OK : LZO_E_ERROR; } @@ -123,8 +188,6 @@ _lzo_config_check(void) // ************************************************************************/ -int __lzo_init_done = 0; - LZO_PUBLIC(int) __lzo_init_v2(unsigned v, int s1, int s2, int s3, int s4, int s5, int s6, int s7, int s8, int s9) @@ -141,8 +204,6 @@ __lzo_init_v2(unsigned v, int s1, int s2, int s3, int s4, int s5, #endif #undef ACCCHK_ASSERT - __lzo_init_done = 1; - if (v == 0) return LZO_E_ERROR; |